Chimney-cap.



No. 792,202. PATENTED JUNE 13, 1905. E. G. DEAN.

CHIMNEY GAP.

APPLICATION FILED FE-B.23.1904.

UNITED STATES Patented June 13, 1905.

PATENT OFFICE.

CHIMNEY-CAP- SPECIFIGATION forming part of Letters Patent No. 792,202,dated June 13, 1905. Application filed February 23, 1904. Serial No-194,700.

To all whom it may concern.-

Be it known that I, ERAsrUs C. DEAN, a citizen of the United States,residing at Economy, in the county of Beaver, State of Pennsylvania,have invented certain new and useful Improvements in Chimney -Uaps; andI do hereby declare the following to be a full, clear,

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to chimney-caps; and it has for its object toprovide a construction wherein the proper draft in the chimney will bemaintained irrespective of the direction or force of any prevailingwind, a further objeot of the invention being to provide a cap whichwill be simple in construction and durable.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a perspective view showing a cap embodying the presentinvention. Fig. 2 is a vertical section taken centrally through the cap.Fig. 3 is aperspective view showing the top of the cap in invertedposition.

Referring now to the drawings, the present cap comprises a hollow baseportion 5, which is adapted to fit over the top of the chimney and uponwhich is mounted the body portion of the cap. he body portion of the capcomprises the four side walls 6, each of which is curved in a verticalplane first outwardly from the base and then inwardly over the base andbeyond the bottom opening of the latter, leaving the top opening 7,which is much smaller than the lower opening of the base. The end edges8 of the sides 6 of the body are brought together excepting at the lowerportions thereof, where are left the openings 9, these openings, asillustrated, being at the bottoms of the corners of the body.

0 Upon the top of the body--that is, upon the inwardly-curved upperportions of the walls 6- are mounted the posts 10, one at each corner ofthe opening 7, and upon these posts is mounted a top plate 11, which isheld above the top opening of the body.

Upon the lower face of the top plate 11 and within the inclosure of theposts 10 is secured a convex plate 13, which projects downwardly or inthe direction of the opening 7.

It is found that in practice a chimney equipped with this cap is notinfluenced by prevailing winds and that the draft through the chimney isefiicient at all times.

WVhat is claimed is A chimney-cap comprising an open base having itsupper edges inclined inwardly; four side walls, each of which is curvedoutwardly from the inner edge of the corresponding inclined portion ofthe'base and turned inwardly at the top, forming a contraction betweenthe base and body, an open top, and an intermediate bulging portion ofthe said body, the inwardly-turned upper portions of the sides extendingtoward but terminating short of one another to form a top openingsmaller than the opening in the base, the adjacent edges of the sidesbeing in contact except at the said contraction between the base andbody; posts secured upon the upwardly-inturned portions of the walls,each post being mounted upon two of said walls at their adjacent meetingfaces; a plate mounted upon the posts; and a convex plate attached tothe lower side of the first-mentioned plate and disposed over the saidtop opening.

In testimony whereof I affix my signature in presence of two witnesses.

ERASTUS C. DEAN. Witnesses:

J. S. MARTZ, WM. ANsHUTz.

